forked from Minki/linux
6a181e3339
Linking with ld.lld via $ make LD=ld.lld produces the warning: ld.lld: warning: cannot find entry symbol _start; defaulting to 0x1000 Linking with ld.bfd shows the default entry is 0x1000: $ readelf -h arch/x86/realmode/rm/realmode.elf | grep Entry Entry point address: 0x1000 While ld.lld is being pedantic, just set the entry point explicitly, instead of depending on the implicit default. The symbol pa_text_start refers to the start of the .text section, which may not be at 0x1000 if the preceding sections listed in arch/x86/realmode/rm/realmode.lds.S were large enough. This matches behavior in arch/x86/boot/setup.ld. Reported-by: Sedat Dilek <sedat.dilek@gmail.com> Suggested-by: Borislav Petkov <bp@alien8.de> Suggested-by: Peter Smith <Peter.Smith@arm.com> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: clang-built-linux@googlegroups.com Cc: grimar@accesssoftek.com Cc: Ingo Molnar <mingo@redhat.com> Cc: maskray@google.com Cc: ruiu@google.com Cc: Thomas Gleixner <tglx@linutronix.de> Cc: x86-ml <x86@kernel.org> Link: https://lkml.kernel.org/r/20190925180908.54260-1-ndesaulniers@google.com Link: https://github.com/ClangBuiltLinux/linux/issues/216
79 lines
918 B
ArmAsm
79 lines
918 B
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* realmode.lds.S
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*
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* Linker script for the real-mode code
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*/
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#include <asm/page_types.h>
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#undef i386
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OUTPUT_FORMAT("elf32-i386")
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OUTPUT_ARCH(i386)
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ENTRY(pa_text_start)
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SECTIONS
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{
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real_mode_seg = 0;
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. = 0;
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.header : {
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pa_real_mode_base = .;
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*(.header)
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}
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. = ALIGN(4);
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.rodata : {
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*(.rodata)
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*(.rodata.*)
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. = ALIGN(16);
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video_cards = .;
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*(.videocards)
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video_cards_end = .;
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}
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. = ALIGN(PAGE_SIZE);
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pa_text_start = .;
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.text : {
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*(.text)
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*(.text.*)
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}
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.text32 : {
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*(.text32)
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*(.text32.*)
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}
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.text64 : {
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*(.text64)
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*(.text64.*)
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}
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pa_ro_end = .;
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. = ALIGN(PAGE_SIZE);
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.data : {
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*(.data)
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*(.data.*)
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}
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. = ALIGN(128);
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.bss : {
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*(.bss*)
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}
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/* End signature for integrity checking */
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. = ALIGN(4);
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.signature : {
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*(.signature)
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}
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/DISCARD/ : {
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*(.note*)
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*(.debug*)
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*(.eh_frame*)
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}
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#include "pasyms.h"
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}
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